Let \( f^{\prime \prime}(x) \) be continuous at \( x=0 \) and \( f^{\prime \prime}(0)=4 \) then ....

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Let \( f^{\prime \prime}(x) \) be continuous at \( x=0 \) and \( f^{\prime \prime}(0)=4 \) then
\( \mathrm{P} \)
value of \( \lim _{x \rightarrow 0} \frac{2 f(x)-3 f(2 x)+f(4 x)}{x^{2}} \) is


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